78878932 has 18 divisors (see below), whose sum is σ = 151728794. Its totient is φ = 35853840.

The previous prime is 78878923. The next prime is 78878939. The reversal of 78878932 is 23987887.

It can be written as a sum of positive squares in only one way, i.e., 78216336 + 662596 = 8844^2 + 814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78878932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78878939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81003 + ... + 81970.

Almost surely, 2^78878932 is an apocalyptic number.

It is an amenable number.

78878932 is a deficient number, since it is larger than the sum of its proper divisors (72849862).

78878932 is a wasteful number, since it uses less digits than its factorization.

78878932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162999 (or 162986 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 78878932 is about 8881.3811988902. The cubic root of 78878932 is about 428.8647392994.

The spelling of 78878932 in words is "seventy-eight million, eight hundred seventy-eight thousand, nine hundred thirty-two".